[native] Make native runtime smaller and allow optional .so stripping #10446
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
grendello
force-pushed
the
dev/grendel/cpp-no-exceptions-mono
branch
from
e3aa1be to
d371eb7
Compare
grendello
changed the title
grendello
force-pushed
the
dev/grendel/cpp-no-exceptions-mono
branch
from
d371eb7 to
ad46dff
Compare
Contributor
Author
|
/azp run |
|
Azure Pipelines successfully started running 1 pipeline(s). |
The `-g0` option is probably going to go away, but let's see how it goes with those changes. Things appear to work locally.
Even though CoreCLR itself uses C++ exceptions, our runtime doesn't. We don't need these sections and removing them won't affect CoreCLR, so let's just get rid of them.
grendello
force-pushed
the
dev/grendel/cpp-no-exceptions-mono
branch
from
affbadf to
b7b9bbd
Compare
jonathanpeppers
approved these changes
Aug 28, 2025
Member
jonathanpeppers
left a comment
jonathanpeppers
left a comment
There was a problem hiding this comment.
I reran some of the failed test lanes.
Sign up for free
to subscribe to this conversation on GitHub.
Already have an account?
Sign in.
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Applications built for .NET10 gained some size because of a number of factors. One of
them is our decision earlier this year to start statically linking
libc++shipped withthe NDK. The reason for this was a desire to start using
std::format, which providesa fully type-safe and it parses format strings at the compilation time, making run time
faster. This added around 200k to the runtime.
However, another side effect of that decision is that the ELF sections used by exception
handling got much bigger and since we don't use exceptions, those sections are a ballast
and nothing else.
This PR does two things:
(
eh_frame,eh_frame_hdrand.gcc_except_table) saving us around 120kBy default we produce shared libraries with the symbol table present, to make potential
native crash stack traces easier to read and interpret. This, however, adds around 400k
to our runtime, so it might not be desirable for everybody to keep that baggage around.
Introduce the
AndroidStripNativeLibrariesboolean MSBuild property, with a defaultvalue of
falsewhich, if set totrue, will cause all the native shared librariesto be stripped of debug symbols at packaging time.